Metered-dose inhaler pump unit



FIG. 1 is a left side, front, and top perspective view of a metered-dose inhaler pump unit, showing the new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the metered-dose inhaler pump unit that form no part of the claimed design. 

CLAIM The ornamental design for a metered-dose inhaler pump unit, as shown and described. 